chore: Add readme.
chore: Add readme.

gskachkov/karma-phantomjs2-launcher,pulseenergy/karma-phantomjs-launcher,park9140/karma-phantomjs-launcher,daptiv/karma-phantomjs-launcher,thescientist13/karma-phantomjs-launcher,karma-runner/karma-phantomjs-launcher,volkanunsal/karma-phantomjs-launcher,Dignifiedquire/karma-phantomjs-launcher